摘要
随着LED性能的不断改善和价格的不断降低,高亮度LED(HBLED)取代传统光源应用于通用照明是未来的发展趋势。设计了一套基于单片机(MCU)控制的HBLED智能照明系统,LED采用恒流驱动,PWM调光方式。其中光强度传感器使得LED能够根据环境需要自动调节自身亮度,温度传感器对LED起到了很好的过热保护作用。详细给出了各个部分的设计。实验表明,系统长时间运行稳定,高效节能,白光质量好,适用于公共场所通用照明。
With the improvement of LED performance and the reduction of its price, it is a trend that high bright LED （HB LED） will be used in illumination area instead of traditional light sources. In this paper, design of intelligent HB LED illumination system was proposed based on MCU controller, which adopted constant current drive and PWM dimming. The light sensor was intended to dim LED automatically according to the ambient light, while the temperature sensor was aimed to protect LED against overheating. The design for each part was given in detail in this paper. The experimental results indicate that the illumination system works stably for a long time with the advantages of energy saving and good quality of white light. The system is suitable for public general illumination applications.
出处
《电源技术》
CAS
CSCD
北大核心
2010年第5期509-512,共4页
Chinese Journal of Power Sources
关键词
高亮度LED
PWM调光
智能照明
高效节能
high brightness LED
PWM dimming
intelligent illumination
energy saving
